Sustain, attack, and note clarity are not vague “tone terms.” They shape how a bass line sits in a mix and how confident you feel while playing. When notes start cleanly, stay focused, and hold their pitch and texture, your timing feels tighter, and your parts translate better on stage and in recordings. If your sound feels slightly blurred or inconsistent, the issue is often mechanical, involving contact pressure, alignment, and how efficiently string energy transfers through the instrument. That is why a bridge-focused upgrade can feel significant even when everything else remains unchanged.